Java.Util.Zip bugs

I've spent much of this morning trying to track down what appears to be a bug in Java.Util.Zip.Deflater/Inflater. The repro is relatively easy:

  byte[] data = new byte[] {
    (byte)0xCF, (byte)0xCF, (byte)0xCF, (byte)0xCF, (byte)0xCF
  };
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  Deflater deflater = new Deflater(Deflater.BEST_COMPRESSION, true);
  DeflaterOutputStream dos = new DeflaterOutputStream(baos, deflater);
  dos.write(data);
  dos.close();

  ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
  Inflater inflater = new Inflater(true);
  InflaterInputStream iis = new InflaterInputStream(bais, inflater);
  int count = 0;
  while (iis.read() != -1)
    count++;
  System.out.println("count: "+count);

The values for the data array are specific. Other values also demonstrate the error, but most values work without issue. You can also fix it by not selecting the 'nowrap' option, but that dramatically increases the output size for small inputs.

I'm not sure how to report the issue to Sun, so I'm blogging it here.